* A Bonanno associate convicted of carrying out a ghoulish mob murder at a reputedly haunted house on Staten Island was put behind bars for life yesterday.

Brooklyn federal Judge Allyne Ross sentenced Joseph Young, 29, to a mandatory life term on 24 racketeering counts, including charges stemming from the murder of mob associate Robert McKelvey in March 2005.

“He took a human life. It’s the most serious crime to commit, and it deserves the most serious sentence,” said Assistant US Attorney Winston Chan.

According to prosecutors, Young agreed to carry out the hit for a $10,000 fee after higher-ups in the crime family learned McKelvey had been blabbing about his mob crimes.

A team lured McKelvey to the creepy Kreischer Mansion, where Young stabbed him and drowned him in an ornamental pool.